91影视

Determine whether each graph is the graph of a function.

Stella has a home business selling gourmet pizzas. The equation $C=4p+25$models the relation between her weekly cost, C, in dollars and the number of pizzas, p, that she sells.

鈸� Find Stella鈥檚 cost for a week when she sells no pizzas.

鈸� Find the cost for a week when she sells 15 pizzas.

鈸� Interpret the slope and C-intercept of the equation.

鈸� Graph the equation.

Find the intercepts of the graph

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Use graph of $y=3x-1$. For each ordered pair, decide :

(a) Is the ordered pair $A(3,-1)B(-1,-4)$a solution to the equation.

(b) Is the point $A(3,-1)B(-1,-4)$on the line?

Determine whether each graph is the graph of a function

Loreen has a calligraphy business. The equation $C=1.8n+35$models the relation between her weekly cost, C, in dollars and the number of wedding invitations, n, that she writes.

鈸� Find Loreen鈥檚 cost for a week when she writes no invitations.

鈸� Find the cost for a week when she writes 75 invitations.

鈸� Interpret the slope and C-intercept of the equation.

鈸� Graph the equation.

(a) Graph the function $f\left(x\right)=3x+4$.

(b)state its domain and range. Write the domain and range in interval notation.

Use slopes and y-intercepts to determine if the lines are parallel:

鈸� $2x+5y=5$and $y=-\frac{2}{5}x-4$

鈸� $y=-\frac{1}{2}x-1$and $x+2y=-2$

(a) Graph the function$f\left(x\right)=2x+5$

(b) state its domain and range. Write the domain and range in interval notation.

Use slopes and y-intercepts to determine if the lines are parallel:

鈸� $4x-3y=6$and $y=\frac{4}{3}x-1$

鈸� $y=\frac{3}{4}x-3$and $3x-4y=12$