Answer: Linear equations in two variables. If a, b, and r are real numbers (and if a and b are not both equal to 0) then ax+by = r is called a linear equation in two variables. (The “two variables” are the x and the y.) The numbers a and b are called the coefficients of the equation ax+by = r.
Step-by-step explanation:
Sarah needs 4.4 centimeters more to reach 5 feet before her next birthday.
I think it’s the third one but I’m not %100 sure
