4.8 Practice

Front

What equation represents the amount of money Sonya has left in her lunch account after x days if she starts with $40 and pays $2 each day?

Back

y = -2x + 40

Front

What is the slope of the line representing Ms. Hussain's grading rate if she grades 1 test every 3 minutes?

Back

1/3

Front

What is the slope of the line representing Mr. Scott's walking pace if he walks at 2.5 miles per hour?

Back

2.5

Front

What is the y-intercept of the line represented by the equation y = 4x - 10?

Back

-10

Front

What does the term 'initial value' refer to in a linear equation?

Back

y-intercept

Front

If a line has a slope of 3, what does this indicate about the relationship between the x and y values?

Back

For every increase of 1 in x, y increases by 3.

Front

What is the formula for calculating the slope (m) between two points (x1, y1) and (x2, y2)?

Back

m = (y2 - y1) / (x2 - x1)

Front

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

Back

The y-intercept of the line.

Front

If a line has a negative slope, what does this indicate about the direction of the line?

Back

The line decreases as it moves from left to right.

Front

What is the meaning of the term 'slope' in a linear equation?

Back

The rate of change of y with respect to x.