A1 1st Semester Exam

Front

What is the formula for the total cost of fencing a square lawn with side length s feet, if the fencing costs $12 per linear foot?

Back

C(s) = 48s

Front

What does it mean if an equation has infinitely many solutions?

Back

It means that there are an infinite number of values for the variable that satisfy the equation.

Front

In the function f(x) = 200 + 25x, what does the number 25 represent?

Back

The amount Tito saves each month.

Front

How do you solve the equation 3x - 4(2x - 5) = 15 for x?

Back

x = 1

Front

What is the value of f(-1) + f(4) for the function f(x) = -3x + 7?

Back

5

Front

What is the perimeter of a square with side length s?

Back

P = 4s

Front

What is the slope-intercept form of a linear equation?

Back

y = mx + b, where m is the slope and b is the y-intercept.

Front

What does the term 'function' mean in mathematics?

Back

A relation that assigns exactly one output for each input.

Front

How do you find the x-intercept of a linear equation?

Back

Set y = 0 and solve for x.

Front

What is the significance of the y-intercept in a linear function?

Back

It is the point where the line crosses the y-axis.