Point-Slope and Slope Intercept Form

Match the following equation to the correct form:

• Standard Form

• Point-Slope

• Slope-Intercept

Tags

MAFS.912.A-APR.2.2

• +3
• -4
• +7
• -7
• -3
• 4

Answer explanation

The original equation is

y-y₁=m(x-x₁)

You have to remember that 2 negatives make a positive so both -3 and -7 become positive when plugged into the equation.

Tags

MAFS.912.A-APR.2.2

Tags

MAFS.912.A-APR.2.2

Label what each item means on the Point-Slope Formula.

a

b

c

slope

y value of a point on the line

x-value of a point on the line

Tags

MAFS.912.A-APR.2.2

Answer explanation

The slope is 3 and the

y-intercept is (0,-4)

Plot the y intercept then use the slope to go up 3 and right 1 from the point plotted.

This point now is (1, -1)

Tags

MAFS.912.A-APR.2.2

Mathematical Equivalence

ON

Tags

MAFS.912.A-APR.2.2

What is the formula for finding slope?

Find the slope. Simplify, if you can.

• 2

Find the slope from the given points:

(3,-1) (4,7)

Write a equation:  A plumber charges $50 for a house call plus $12 per hour for labor.

• y = 50 x + 12
• y =12 x + 50
• y = 62 x
• x = 50 + 12y