prealgebra
posted by Kendrick
I am actually in 6th grade but I really want to learn more about pre algebra. I was given a task to solve the question of y=9x+3*7 and i don't get what to do. Should I graph? Or solve for y?

Steve
depends on what you mean by solve the question. Drawing a graph is one way to illustrate the relation between x and y.
Another way is to fill in a table of matching values. Pick values for x and calculate the matching y values.
Other questions might be to determine the axis intercepts, the slope, and so on.
No need to solve for y. The equation does that already.
You might want to solve for x:
y = 9x+3*7
y21 = 9x
(y21)/9 = x
Respond to this Question
Similar Questions

PreCalculus/Calculus
I am too embarassed to ask this Calculus (really precalculus) question in tutoring, because I know I should know. Is the inverse of f(x)=3x1 actually f(x)=1/3x+1? 
prealgebra
kk my teach told me to describe and draw things that are about prealgebra and she told me to write what prealgebra is... so can anyone help me? 
8th grade pre algebra
i am having trouble with solving inequalitys... how do you solve t+6>3 
pre algebra
my grade is 83.17 in pre algebra in college, but the final exam is worth 300 points. If I got a B or B or a C on the final, what would my grade be overall? 
7th grade prealgebra
The problem is a(ac)=23. Solve for c if both a and c are positive numbers. Thanks 
PreAlgebra
How do you solve this PreAlgebra problem: $1.25x + $2.25y = $916 x + y = 560 
PreAlgebra
"Triangle LMN has L at (1,1) and M at (2,3). Triangle L'M'N' has L' at (1,1) and M' is at (3,2). Describe the transformation." This question is really tripping me up. I even tried putting it on a graph to solve it, but I just can't. … 
Question
@Alex asked this question when I was on earlier: Let line l_1 be the graph of 5x + 8y = 9. Line l_2 is perpendicular to line l_1 and passes through the point (10,10). If line l_2 is the graph of the equation y=mx +b, then find m+b. … 
PreAlgebra
Sally puts $200.00 in a bank account. This account earns 8% compound interest. How much money is in the account after three years? 
Pre Algebra
“A prealgebra book is 8 1 half Click for more options inches by 9 1 fourth Click for more options inches. Determine the perimeter of the textbook. Describe the steps you took to solve this problem.