Desmos
How do you type x3 into Desmos?
type SHIFT ^
or use the ab button
The expression (3x2 + 4x - 8) + 2(11 - 5x) is equivalent to
equivalent to
1) 3x2 - x + 5
2) 3x2 - x + 14
3) 3x2 - 6x + 14
4) 3x2 + 14x + 14
#3
The solution to 3(x - 8) + 4x = 8x + 4
x = -28
Is (1,1) in the solution of?
y + x > 2
y ≤ 3x − 2
No because it is on the dashed line
Two friends went to a restaurant and ordered one plain pizza and two sodas. Their bill totaled $15.95. Later that day, five friends went to the same restaurant. They ordered three plain pizzas and each person had one soda. Their bill totaled $45.90. Write and solve a system of equations
1P + 2S = 15.95
3P + 5S = 45.90
How do you put a table into desmos?
Top left "plus" button
The expression -2(x2 - 2x + 1) + (3x2 + 3x - 5) is equivalent to
1) x2 + x - 4
2) x2 - x - 7
3) x2 + 7x - 4
4) x2 + 7x - 7
#4
Which value of x satisfies the equation 5/6 (3/8 - x) = 16
x = -18.825
Which ordered pair is not in the solution set of
y >− 1/2 x + 5 and y ≤ 3x − 2?
1) (5,3)
2) (4,3)
3) (3,4)
4) (4,4)
(4,3) because it is on the dashed line
Alicia purchased H half-gallons of ice cream for $3.50 each and P packages of ice cream cones for $2.50 each. She purchased 14 items and spent $43. Write a system of equations that could be used to determine how many of each item Alicia purchased.
3.50 H + 2.50 P = 43
H + P = 14
What value do you look for when the question asks for correlation coefficient?
use the R value, not the R2
Which expression is equivalent to 2(3g - 4) - (8g + 3)?
1) -2g - 1
2) -2g - 5
3) -2g - 7
4) -2g - 11
#4
What is the solution to −3(x − 6) > 2x − 2
x < 4
Which point is a solution to the system below?
2y <−12x + 4
y <−6x + 4
1) (1, 1/2)
2) (0,6)
3) (−1/2 ,5)
4) (−3,2)
(-3, 2) because it is in the double shaded area
Mo's farm stand sold a total of 165 pounds of apples and peaches. She sold apples for $1.75 per pound and peaches for $2.50 per pound. If she made $337.50, write a system of inequalities to model the scenario.
1.75 A + 2.50 P = 337.50
A + P = 165
How do you find the equation for a linear regression once you type the table in?
Click on the line button that pops up on the left
The sum of (x + 7)2 and (x - 3)2 is
1) 2x2 + 58
2) 2x4 + 58
3) 2x2 + 8x + 58
4) 2x4 + 8x2 + 58
#3
What is the solution to 2m− 4 ≤ 3(2m + 4)
m ≥ -4
Graph the following system of inequalities on the set of axes below: −2y < 3x + 12
x ≥−3
Is (-5, 5) is a solution to this system
No, because it is only in the shading (solution) of one line
In May, she saw 2 matinees and 3 regular-priced shows and spent $38.50. In June, she went to 6 matinees and one regular-priced show and spent $47.50. Write a system of equations to represent the cost, m, of a matinee ticket and the cost, r, of a regular-priced ticket.
2M + 3R = 38.50
6M + 1R = 47.50
How do you type a square root in the caculator?
Open the keyboard and look for
√
The expression x2 - 26x - 120 is equivalent to
1) (x + 4)(x - 30)
2) (x - 4)(x + 30)
3) (x - 20)(x + 6)
4) (x + 20)(x - 6)
#1
Solve:
− 2/5 x ≥ 1/3 x + 11
x ≤ −15
Given: 3y − 9 ≤ 12
y <−2x − 4
State the coordinates of a point that satisfies both inequalities
(many answers)
Dylan has a bank that sorts coins as they are dropped into it. The bank shows 90 coins with a value of $17.55 inside of the bank. If Dylan only collects dimes and quarters, write a system of equations in two variables or an equation in one variable that could be used to model this situation
0.10D + 0.25Q = 17.55