Grade 8 Mathematics Pre-Midterm Post-Halloween November 1, 2024 Jeopardy

100

5x = 10, Given

x = 2, which property?

5x = 10, Given

x = 2, division property of equality

100

x + 4 = 10, given

x = 6, which property?

x + 4 = 10, given

x = 6, subtraction property of equality

100

a = a, which property?

a = a, reflexive property of equaility

100

0.5(x + 3) = 10, given

x + 3 = 20, which property?

0.5(x + 3) = 10, given

x + 3 = 20, division property of equality

100

f(x) = x² - x - 72

What are the solutions to f(x) = 0?

f(x) = x² - x - 72

What are the solutions to f(x) = 0?

(x - 9)(x + 8)

x = -8, 9

200

a) y = 2x + 3

b) 2y = 4x + 3

c) 2x = y - 3

Identify any parallel or perpendicular lines

a) y = 2x + 3

b) 2y = 4x + 3

c) 2x = y - 3

a and c are parallel with b (a and c are the same line)

200

line p has a slope of -2 and a point at (1, 5). What is its y-intercept?

(0, 7)

200

line q has a point at (-2, 3) and (3, 13). Write an equation for line q using slope-intercept form.

y = 2x + 7

200

line g has a y-intercept at (0, 5) and a point at (3, -10). What is its slope?

y = -5x + 5

200

f(x) = 2x² - 2x - 40

What are the solutions to f(x) = 0?

f(x) = 2x² - 2x - 40

What are the solutions to f(x) = 0?

x = -4, 5

300

What is the sum of the interior angles of a pentagon?

(5-2) * 180 = 540 degrees

300

What is the measure of a single interior angle of a regular pentagon?

(5 - 2)(180) = 540

540 / 5 = 108 degrees

300

How many solutions do these equations have?

y = (x - 3)² - 2

y = -4

Options: 0, 1, 2, infinite

How many solutions do these equations have?

y = (x - 3)² - 2

y = -4

Options: 0, 1, 2, infinite ----> 0 solutions

300

How many solutions do these equations have?

y = x² - 2x - 24

y = 10

Options: 0, 1, 2, infinite

How many solutions do these equations have?

y = x² - 2x - 24

y = 10

Options: 0, 1, 2, infinite ---> 2 solutions

300

f(x) = x² - x - 72

Where is the vertex located?

f(x) = x² - x - 72

Where is the vertex located?

(1/2, -72.25)