Question 1

Given the equation $$4x + 5y = 20$$, what is the y-intercept of the line?

Accepted Answer

$$y = 4$$

Question 2

What is the x-intercept of the line $$4x + 5y = 20$$?

Accepted Answer

$$x = 5$$

Question 3

Which of the following is the correct slope-intercept form of the equation $$4x + 5y = 20$$?

Accepted Answer

$$y = -\frac{4}{5}x + 4$$

Question 4

If a line passes through the points $$(0,4)$$ and $$(5,0)$$, what is its slope?

Accepted Answer

$$m = -\frac{4}{5}$$

Question 5

Which of the following points lies on the line $$4x + 5y = 20$$?

Accepted Answer

$$(0,4)$$

Question 6

A company’s cost function is modeled by $$4x + 5y = 20$$, where $$x is $$the number of units produced and $$y is $$the cost in dollars. If the company produces 2 units, what is the cost?

Accepted Answer

$$y = 2.4$$

Question 7

Which of the following best describes the graph of $$4x + 5y = 20$$?

Accepted Answer

A straight line with a negative slope

Question 8

If the equation $$4x + 5y = 20$$ models the relationship between time spent studying ($$x$$ hours) and test score ($$y$$ points), what is the test score if a student spends 3 hours studying?

Accepted Answer

$$y = 1.6$$

Question 9

Which of the following equations is parallel to $$4x + 5y = 20$$?

Accepted Answer

$$4x + 5y = 10$$

Question 10

If the line $$4x + 5y = 20 is $$graphed, what is the value of $$y$$ when $$x = 0$$?

Accepted Answer

$$y = 4$$

Graphing Linear Equations and Finding Intercepts

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