TSI Math Practice

Front

What does it mean for two variables to be directly proportional?

Back

Two variables are directly proportional if they increase or decrease in the same ratio. This means that if one variable doubles, the other variable also doubles.

Front

If y = kx, what is the value of k when y = 2 and x = 3?

Back

k = 2/3.

Front

What is the simplified form of 4k + 6k - 3k + 3s - s?

Back

7k + 2s.

Front

How do you find the total cost of items when given the number of items and their individual prices?

Back

Multiply the number of items by the price of each item and sum the total.

Front

What is the factored form of x² + 16x + 15?

Back

(x + 1)(x + 15).

Front

How do you calculate a 20% discount on an item that costs d dollars?

Back

Multiply d by 0.20 to find the discount, then subtract that from d, or simply multiply d by 0.80.

Front

What is the formula for calculating the total cost of sandwiches and soups if each costs different amounts?

Back

Total cost = (number of sandwiches * price of sandwich) + (number of soups * price of soup).

Front

What is the relationship between the coefficients in a polynomial and its factored form?

Back

The coefficients in a polynomial can be derived from the roots of its factored form.

Front

What does it mean to simplify an algebraic expression?

Back

To simplify an algebraic expression means to combine like terms and reduce it to its simplest form.

Front

What is the significance of the constant term in a quadratic equation?

Back

The constant term in a quadratic equation affects the y-intercept of the graph of the equation.