Foundations Quiz 4.2 Review

Formulas

100

Slope Formula

m=(y₂-y₁)/(x₂-x₁)

200

Standard Form

Ax+By=C

300

Slope-Intercept Form

y=mx+b

400

Point Slope Form

y-y₁=m(x-x₁)

Write in Slope Intercept Form

100

Slope = -2

y-intercept = -5

y=-2x-5

200

6x-4y=12

y=3/2x-3

300

6x+2y=-12

y=-3x-6

400

(3, 8), m=-1/3

y=-1/3x+9

500

(-3,7) and (6,-8)

y=-5/3x+2

Parallel & Perpendicular Slopes

100

What is the slope of a line PARALLEL to y=4x-2?

m=4

200

What is the slope of a line PERPENDICULAR to y=-x?

m=1

300

What is the slope of a line PARALLEL to 7x+3y=10?

m=-7/3

400

What is the slope of a line PERPENDICULAR to 12x-6y=10?

m=-1/2

500

What is the slope of a line PERPENDICULAR to y=67?

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Another line

100

Find the equation of a line passing through (1,4) and PARALLEL to y=5x+3

y=5x-1

200

Find the equation of a line passing through (6,2) and PARALLEL to 4x-2y=12.

y=2x-10

300

Find the equation of a line passing through (-3,1) and PERPENDICULAR to y=-x

y=x+4

400

Find the equation of a line passing through (-4,-2) and PARALLEL to x+4y=8

y=-1/4x-3

500

Find the equation of a line passing through (8,3) and PERPENDICULAR to x=4.

y=3