Mini-Summative Interim Assessment 2 revised

Functions A and B are both linear functions of x. Which statements comparing the functions are true?

• The slope of function A is greater than the slope of function B.

• The y-value when x = -4 for function A is less than the y-value when x = -4 for function B.

• The y-intercept of function A is equal to the y-intercept of function B.

• The y-intercept of function A is greater than the y-intercept of function B.

• The slope of function A is less than the slope of function B.

Which statements about the function in the table and the line represented by y = 4 are true? Select all that are true.

• The lines are perpendicular to each other.

• The lines have the same y-intercept.

• The lines both cross through the origin.

• The lines both cross the y-axis but not the x-axis.

• The lines are parallel

The center of the Sun is 1.5 × 10^7 °C. The center of the Earth is 6.0 × 10^3 °C. Which of the following is a true statement about the comparison of the two temperatures?

• The Sun is 2.5 × 10^3 times hotter than the center of the Earth.

• The center of the Sun is 4 × 10^4 times as hot as the center of the Earth.

• The center of the Sun is 4.5 × 10^4 times hotter than the center of the Earth.

• The center of the Sun is 4 times hotter than the center of the Earth.

Solve for x: 7(2x + 6) - 4(9x + 6) = -26

• x = -2

• x = 46/11

• x = 19/11

• x = 2

Select the equations that represent a linear function.

• a = πr²

• y = x/2

• x = y

• y = 2(x - 5)

• y = x

When the input to a function is -12, the output is 5. Which statements about this function must be true?

• An input of -12 has infinitely many possible outputs.

• An input of -12 has exactly one possible output.

• An output of 5 has infinitely many inputs.

• An output of 5 has exactly one input.

For which equation is ³√125 the solution? Select all that apply.

• x² = 25

• ³√x = 125

• √x = 5

• x³ = 125

• x = √25

Which point on the number line is the best approximation for √15?

• L

• M

• N

• P

• 0 to 1

• 4 to 5

• 5 to 6

• 6 to 7

Which number is irrational?

• 23.278941...

• 0.0032