Algebra 1-A Practice Test

How would you write the equation with a slope of 2/3 and a y-intercept of -3

Answer explanation

The correct equation with a slope of 2/3 and a y-intercept of -3 is y=(2/3)x-3, so the answer choice y=\frac{2}{3}x-3 is the right one.

When converting a decimal to a percent , which way does the decimal point move?

• To the right two spaces

• To the left two spaces

• You don't move the decimal point

• You move the decimal point one space to the left

Answer explanation

When converting a decimal to a percent, the decimal point moves to the right two spaces, which is the correct choice.

What percent of 96 is 88?

• 91.7%

• 109%

• 84.5%

• 88%

Answer explanation

To find the percentage, divide 88 by 96 and multiply by 100. (88/96)*100 = 91.7%. Therefore, 91.7% of 96 is 88.

What is 90% of 250?

• 245

• 225

• 255

• 244.33

Answer explanation

To find 90% of 250, multiply 250 by 0.9. 250 * 0.9 = 225. Therefore, 90% of 250 is 225.

A _____________ is a symbol, usually a letter that stands for a number. 

• coefficient

• algebraic expression

• variable

• term

Answer explanation

A variable is a symbol, usually a letter that stands for a number in algebraic expressions.

Three times a number increased by nine

• 3h-9

• 3(h-9)

• 3(h+9)

• 3h+9

Answer explanation

The correct choice is 3h+9 because 'Three times a number increased by nine' translates to 3h+9, where h represents the number.

Evaluate the expression below:

3x² - 10x + 3, if x = -4

Mathematical Equivalence

ON

What is the coefficient in the expression 5y - 2y + 7?

Answer explanation

Combining like terms, we get 7y + 3y - 10b + 7a - 5a = 10y - 10b + 2a = 2a - 10b + 10y. Therefore, the correct choice is 2a - 10b + 10y.