Graph Linear Functions Worksheet

**Page 13**

121.

Find the slope and $y$-intercept of the function $f$($x$) = $\frac{4}{5}$$x$ + 7.

a. | Slope = -$\frac{4}{5}$, $y$-intercept = 9 | ||

b. | Slope = $\frac{4}{5}$, $y$-intercept = 7 | ||

c. | Slope = $\frac{5}{\mathrm{6,}}$$y$-intercept = 7 | ||

d. | None of the above |

[Original equation.]

[Standard equation.]

The slope of the function,

[Combine with the standard equation.]

Correct answer : (2)

122.

Find the slope and $y$-intercept of the function $f$($x$) = - 5($x$ - 2) + 2 .

a. | Slope = -4 and $y$-intercept is 11 | ||

b. | Slope = -5 and $y$-intercept is 12 | ||

c. | Slope = -6 and $y$-intercept is 13 | ||

d. | None of the above |

[Original function.]

[Multiply.]

[Multiply.]

[Standard function.]

The slope of the function,

[Compare the obtained equation with the standard equation.]

Correct answer : (2)

123.

Which of the following is not a linear function?

a. | $y$ = ($x$ + 5) + 2$x$ | ||

b. | $y$ = $x$ ^{5} + 2 | ||

c. | $y$ = $\frac{\mathrm{x}}{5}$ + 2 | ||

d. | None of the above |

[In a linear function, the exponent of

Among the choices the function

[The exponent of

So, the function

Correct answer : (2)

124.

Which of the graphs best suits the equation $y$ = $\frac{-2}{3}$ $x$ + 2 ?

a. | Graph 1 | ||

b. | Graph 2 | ||

c. | Graph 3 | ||

d. | Graph 4 |

[Original equation.]

[Substitute 0 for

[Simplify.]

[Substitute 1 for

[Simplify.]

[Substitute 2 for

[Simplify.]

[Substitute 3 for

[Simplify.]

Among the choices, graph 2 satisfies the condition.

Correct answer : (2)