Linear Modeling Using Slope Intercept Form

In the equation y=mx+b, what does the m represent?

• rate of change (slope)

• y-intercept

• linear

• point-slope

What does 'b" represent in y=mx+b

• initial value (y-intercept)

• an ordered pair

• nothing

• rate of change (slope)

At the beginning of the summer, Jenna had saved $141. She will earn $32 per day of summer work. Which of the following equations represents how much money she will have, in all, if she spends nothing all summer as a function of the number of days she worked?

• y = 141-32x

• y = x + 141

• y = 32x + 141

• y = 141x + 32

A restaurant investigated the correlation between the prices and the number of customers. The linear model below represents this situation, where x is the average meal price (in dollars), and y is the number of daily customers. Interpret the slope. y = - 18x + 437

• The average price per meal is $18.

• The average number of daily customers is 18.

• If the average meal price decreases by a dollar, the number of daily customers decreases by 18.

• If the average meal price increases by $1, the number of daily customers decreases by 18.

Write the equation in SLOPE-INTERCEPT form of the line that passes through the given point and has the given slope:
 (-2, -1); m= -3

Mathematical Equivalence

OFF

In the line y = mx + b, what is true?

• The y-intercept is

  (0, b)

• The x-intercept is

  (0, b)

• The slope is m

• It is linear

Slope - ​ (a)   form is ​ (b)   ​ (c)   + ​ (d)  

• intercept

• y =

• mx

• b

What is the slope intercept form of the line that passes through the point (-2, 5) and has a slope of 2?

• 2

• 9

• 5

• -2

• 1

What is the equation of a line in slope intercept form given the slope is -2 and passes through a point (-13,21)?

Mathematical Equivalence

ON