Solve the system equation graphically Just a few review questions thanxs !!?

1)x+y=1 and y=(2/3)x-4



2) when graphing 2 lines , which of the following will result in an algebraic solution that is the point (x,y)

a) parallel lines

b)coincident lines

c)perpendicular lines

d) none of the above



3)In system of equations , solving one equation for a veriable and plugging that expression into the other equation is known as the ------------ method



4)a+b=10

3a+2b=40 what woould be the second equation you dont have to solve it



5)3a-5b=10

a+7b=12



6)5x-y=-5

3x-5y=-3



7)3x-2y=5

6x-3y=2



8)You purchese 20 dozen roses and 15 oezen carnations at the cost of $504 for you school student council to use a valentine fundraiser . you packedged them together into bouquets of 2 roses for $5.00 or 3 carnations for $3.00 . altogether your student council sold 251 bouqets for atotal of $989.00



let x = number of roses bounquets sold

let y = number of carnation bouquets sold

Solve the system equation graphically Just a few review questions thanxs !!?
1. Draw the line x + y = 1. It has points (0,1) and (1,0)

then draw the line y = 2/3 x -4 . Start at y-intercept of -4 and then move the slope up 2 right 3. You will intersect the first line at (3, -2) which is the solution.



2. perpendicular lines are the only ones listed that can intersect at a single point. Parallel lines do not intersect and coinciding lines intersect at infinite points.



3. substitution



4. Not understanding what you mean by second equation. You have two.



8. x + y = 251

5x + 3y = 989

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