STAAR Day 5 Review

What is the equation in slope-intercept form that passes through the points $\left(-4,\ 47\right)$  and  $\left(2,\ -16\right)?$  

•  $y=-\frac{21}{2}x+\frac{979}{21}$  

•  $y=-\frac{2}{21}x+\frac{979}{21}$  

•  $y=-\frac{21}{2}x+5$  

•  $y=-\frac{2}{21}x+5$  

The graph of a linear function is shown on the grid.

Which equation is best represented by this graph?

• $y+2=\frac{7}{5}\left(x+7\right)$

• $y-2=\frac{7}{5}\left(x-7\right)$

• $y+2=\frac{5}{7}\left(x+7\right)$

• $y-2=\frac{5}{7}\left(x-7\right)$

The table represents some points on the graph of a linear function.

Which function represents the same relationship?

• $h\left(x\right)=-3x-10.5$

• $h\left(x\right)=-x-3.5$

• $h\left(x\right)=3x-10.5$

• $h\left(x\right)=x-3.5$

The graph of linear function  $f$  passes through the point   $\left(1,\ -9\right)$  and has a slope of  $-3.$  

What is the zero of the function?

• 2

• 4

• -6

• -2

Which graph represents  $-3x+5y=-15?$  

• 
• 
• 
• 

The graph of a function is shown on the grid?

Which ordered pair best represents the location of the y-intercept?

• $\left(\frac{1}{3},\ 0\right)$

• $\left(0,\ -2\right)$

• $\left(0,\ \frac{1}{3}\right)$

• $\left(-2,\ 0\right)$

The water level of a river was measured each day during a two-week period. The graph models the linear relationship between the water level of the river in feet and the number of days the water level was measured.

Which statement best describes the y-intercept?

• The water level increased by 0.25 ft per day.

• The maximum water level was 19.5 ft.

• The initial water level was 16 ft.

• The water level was measured for 14 days.

The graph of a linear function is shown on the grid.

What is the rate of change of y with respect to x for this function?

The table shows a linear relationship between x and y.

What is the rate of change of y with respect to x?

• $-\frac{9}{2}$

• $\frac{2}{9}$

• $-\frac{2}{9}$

• $\frac{9}{2}$