Writing equations in slope-intercept form
Write the equation of the line with the coordinates (-3,4) and (0,0).
What is y=-4/3x
What is the formula for point-slope form?
What is y-y1 = m(x-x1)
Which of the following lines are parallel?
a. 5x-2y=6
b. 2x+y=3
c. 2.5x+y=5
What is a and c
What is d
In the coordinate (0,-5), what is the y-intercept?
What is -5
Write the equation of the line with the coordinates (0,2) and (3,3).
What is y=1/3x+2
In point-slope form, write the equation of a line that passes through the point (5,3) and has a slope of 1/8.
What is y-3=1/8(x-6)
The equation of line U is y=-9/4x+1. Line V is perpendicular to line U. Line V includes the point (-3,2). What is the equation of line V? Write your answer in slope intercept form.
What is y=4/9x+10/3
True or false? The slope of the line represented by the given equation is -1:
y+3=-(x-8)
What is true
Always, never, or sometimes?:
Parallel lines won't touch.
What is always
Write the equation of the line with the coordinates (0,-2) and (2,2).
What is y=2x-2
Write the equation of a line with the coordinates (3,1) and (1,-3). Write your equation in point-slope form.
What is y=2x-5
Which of these equations, if any, are perpendicular?
a. y=2x+3
b. 1/2x+y=4
c. 4x+2y=16
a and b are perpendicular
What is the equation of a line that passes throught the points (0,3) and (4,0)?
What is y=-3/4x+3
Solve for x:
-5x+25≥10
What is x≤3
Convert 4x+2y=-8 into slope-intercept form.
What is y=-2x-4
Write the equation of a line that passes through the point (-5,-6) and has a slope of 2. Write your equation in point-slope form.
What is y+6=2(x+5)
What is false
What is the slope of the coordinates (2,5) and (4,10)?
What is 5/2
Always, never, or sometimes?
Perpendicular lines create a 25 degree angle.
What is never
Julie wanted to write an equation with a slope of 2 and a y-intercept of 7. This is her equation:
y=7x+2.
What did she do wrong?
She made the slope 7 and 2 the y-intercept. Since slope-intercept form is y=mx+b where m is the slope, m must be 2. Since b is the y-intercept it must be 7. The correct equation is y=2x+7.
Your city order bins to collect wood waste from restraurants for composting. Use the coordinates to find the total cost of ordering 45 bins. Write your answer in point slope form.
Number of bins = x
Total cost in dollars = y
(5,285), (10,545), (15,805), (20,1065)
What is y-285=52(x-5)
Two streets are parallel on a map, 7th street and 8th street. The map is put on a coordinate plane and the equation for 7th street is 𝑦 = 2𝑥 − 6. 8th street goes through the coordinates (1,3) on the map. Write an equation of the line 8th street is on. Simplify your equation as much as possible.
What is y=2x+1
Which equation represents a line with an undefined slope?
a. 2x+3y=0
b. 3y=0
c. 2x=0
d. y=-x
What is c
On tuesday, the temperature outside is -15°. On Wednesday, the temperature is -5°. Assuming the temperature changed at a constant rate, what will the temperaure be outside on Friday?
What is 15°