Writing Linear Equations

What does the b represent in y=mx+b

• slope

• total cost

• y-intercept

Is the following equation in slope-intercept form or standard form?

250x+ 500y=3000

• Standard Form

• Slope-Intercept Form

y=mx+b

b represents the

• Starting Points

• Rate of Change

Which equation represents the following:

You are going out to eat for lunch. Each candybar costs 1.50 and each ounce for a salad cost $.50. You have $20 to spend.

• 20x + 1.50 y = 0.50

• y= .50x + 1.50

• y=1.50x + 20

• 1.50x+0.50y=20

Slope is 1/2 and y-intercept is -5

Whats the equation in slope intercept form?

• y=-5x+1/2

• y= 1/2 x - 5

• y= -1/2 x +5

• y = 5x +1/2

What's the linear equation when

m= 2 through a point (2,5)

• y= 2x +1

• y= 2x +9

• y= 2x + 5

• y= 2x + 2

What is the slope through points (2, 4) and ( 5, 9)

• 3/5

• 5/3

• 4/2

• 2/5

For babysitting, Josie charges a flat fee of $5 plus $7 per house. What is the equation?

• 5x +7y = C

• y= 5x+ 7

• y=7x + 5

A plumber charges $50 for a service call plus $25 per house of service. What is the equation?

• y= 50x +25

• y= 25x+50

• 25x + 50 y = C

You have $100 to spend at thrift store. Each shirt costs $4 and each pants costs $6. What is the equation

• 6x + 4y = 100

• 100x + 4y = 6

• 100= 4x+6

• y= 4x + 6