Problem 3
In which quadrant does the graph of (3,-5) lie?
Problem 7
Determine whether each equation indicates direct variation, inverse variation, joint variation, or combined variation. $$y=\frac{1}{2} x z$$
Problem 11
Fill in the blanks. The slope of a line is the change in _____ divided by the change in _____.
Problem 11
What number is \(0.5 \%\) of \(250 ?\)
Problem 12
The graph of the equation \(y-3=7[x-(-2)]\) has a slope of _____ and passes through _____.
Problem 18
Fill in the blanks. Assume that \(k\) is a constant. The equation \(y=\frac{k x}{z}\) represents combined variation and means that \(y\) varies _____ with \(x\) and _____ with \(z\).
Problem 18
Fill in the blanks. The rectangular coordinate system is formed by two ____ number lines called the ____ and ______ axes.
Problem 19
Fill in the blanks. An equation whose graph is a line and whose variables are to the first power is called a _____ equation.
Problem 20
Express each sentence as a formula. A farmer's harvest \(h\) varies directly with \(a,\) the number of acres he plants.
Problem 25
Express each sentence as a formula. The distance \(d\) traveled varies jointly with the speed \(s\) and the time \(t\)