Mathematics Content Areas Flashcards

A graph shows the equation y = -2x + 5. What is the y-intercept?

Answer: 5

In slope-intercept form y = mx + b, the y-intercept b = 5.

What is the surface area of a cube with side length 4 cm?

Answer: 96 cm²

Surface area of a cube = 6 × side² = 6 × 16 = 96 cm².

Which property is illustrated by: 4(3 + 5) = 4(3) + 4(5)?

Answer: Distributive Property

The Distributive Property states a(b + c) = ab + ac.

A recipe calls for 2½ cups of flour to make 24 cookies. How many cups of flour are needed to make 60 cookies?

Answer: 6¼ cups

60 ÷ 24 = 2.5 times the recipe; 2.5 × 2.5 = 6.25 = 6¼ cups.

On a coordinate plane, which quadrant contains the point (-3, 4)?

Answer: Quadrant II

A negative x-value and positive y-value place the point in Quadrant II.

A data set has a mean of 50 and a standard deviation of 5. Which value is exactly 2 standard deviations above the mean?

Answer: 60

Two standard deviations above the mean = 50 + 2(5) = 50 + 10 = 60.

Two parallel lines are cut by a transversal. If one co-interior (same-side interior) angle is 110°, what is the other co-interior angle?

Answer: 70°

Co-interior angles are supplementary, so 180° - 110° = 70°.