Math Mastery for Grade 9

Solve for x: 2x + 5 = 15

• 10

• 5

• 0

• -5

What is the vertex of the quadratic function y = x^2 - 4x + 3?

• (2, -1)

• (1, 2)

• (3, 0)

• (0, 3)

Calculate the area of a rectangle with length 10 cm and width 5 cm.

• 15 cm²

• 50 cm²

• 30 cm²

• 40 cm²

Find the perimeter of a triangle with sides 7 cm, 8 cm, and 5 cm.

• 20 cm

• 18 cm

• 15 cm

• 22 cm

Simplify the expression: 3x + 4x - 2 + 5.

• 5x + 2

• 8x - 2

• 3x + 7

• 7x + 3

Graph the linear equation y = 2x + 3.

• The graph of the linear equation y = 2x + 3 is a curve with a y-intercept at (0, 2) and a slope of 3.

• The graph of the linear equation y = 2x + 3 is a straight line with a y-intercept at (0, 3) and a slope of 2.

• The graph of the linear equation y = 2x + 3 is a horizontal line with a y-intercept at (0, 3).

• The graph of the linear equation y = 2x + 3 is a straight line with a y-intercept at (0, 0) and a slope of 1.

If a^2 + b^2 = c^2, find c when a = 3 and b = 4.

• 5

• 6

• 7

• 8

Solve for y: 3y - 7 = 2y + 5.

• 12

• 10

• 5

• 15

What is the area of a circle with a radius of 7 cm?

• 153.94 cm²

• 154.00 cm²

• 160.00 cm²

• 150.00 cm²

Determine the slope of the line represented by the equation 4x - 2y = 8.

• 2

• 0

• 1

• -2