Parallel & Perpendicular Lines
Parallel Lines have the _______ slope.
SAME
If I am writing an equation that is parallel to y=3x +4, what would be the slope of the new equation?
3
Identify which what type of line is drawn for each sign. < & ≤
< = solid line, ≤ = dashed line.
What is the y-intercept of the line? y=2x+10
(0,10)
What does r stand for in the Interest Equation? I=Prt
Perpendicular Lines have _____________ slope
Negative reciprocal
If i am writing an equation that is perpendicular to the equation y = 4x +5. What would the slope be of the new equation?
-1/4
What number would I start on to begin drawing the line of the following inequality? y> 3x -2
Plot the y-intercept FIRST ALWAYS: -2
What are the co-ordinates of the x-intercept line y=2x+4
(-2,0)
Lily & Owen each invest the same amount of money at the same interest rate for more than one year. Owen earns simple interest and the Lily earns compound interest. Who will earn more money, and why?
Compound interest account, because it earns interest on both the principal and the interest already earned?
For the equation y = 3, which direction would the line of the graph be?
Horizontal
Write the equation of the line that is parallel to the given equation and goes through the given point. y = 2x +5 through (-1, 2)
y = 2x + 4
Draw the inequality for y>x-1
show on whiteboard
Logan got a job Sports Check! He gets a base pay of $20, plus $12.00 per hour. Write an equation for his total pay.
y=12x+20
Mia invests $4000 for one year at a rate of 8%. How much (simple) interest will she earn at the end of that year?
Mia will earn $320 in simple interest after one year.
If a slope is undefined, would the equation of the line begin with x or y?
x
Write the equation of the line that passes through the given points.
A (2, -4) and B (1, 6)
y=-10x+16
Draw the inequality of 2y<4x+8 (SOLVE FOR Y FIRST)
show on Whiteboard
How much will Logan be paid if he work 3 hours at Sports Check?
$56
If Zach deposits $1500 into his account that pays interest at a rate of 3% per year, compounded annually, how much interest will he have made at the end of 3 years?
Zach will have made approximately $139.09 in interest after 3 years.
If a line is vertical and crosses the axis at 5. What would be the equation?
x = 5
Write the equation of the line that passes through the given points.
C (-1, 3) and D (0, -6)
y = -9x-6
Is (3,2) a solution to -7y<5_4x
−14<17✓ true
How many hours did Logan work if they were paid $160 for his job at Sports Check? (*hint* let P= 160)
11.66 hours
If Isabelle invests $1000 for three years at 5%, will she make more interest in a simple interest or compound interest account?
Isabelle will earn $157.63 with compound interest and $150 with simple interest, so compound interest makes $7.63 more over 3 years.