# Algebra - Solving Simultaneous Equations Graphically Questions

a - answer    s - solution    v - video    d - discussion

## Question 1

Find the point of intersection for the following graphs

a) a s v d

b) a s v d

c) a s v d

d) a s v d

## Question 2

Find the solution to the following pair of equations. Use the graphs to find this.

a) $y=x-3$ and $y=-x+5$

a s v d

b) $y=5x+2$ and $y=x+6$

a s v d

c) $y=2x+6$ and $y=\frac12x+3$

a s v d

d) $2x+3y=0$ and $x+y=2$

a s v d

## Question 3

Use the given graphs to solve the following equations

a) $y=x$ and $y=4x+6$a s v d
b) $y=x$ and $y=-2x+6$a s v d
c) $y=4x+6$ and $y=-2x+6$a s v d

## Question 4

Solve these simultaneous equations graphically

a) $y=2x$ and $y=x+1$a s v d
b) $y=2x-2$ and $y=\frac12x+1$a s v d
c) $y=-x+3$ and $y=4x+8$a s v d
d) $y=-2x+5$ and $y=-x-1$a s v d

## Question 5

a) Graph $y=2x+6$ and $x-\frac12y=0$ on the same number planea s v d

b) Will solutions be obtained if the equations $y=2x+6$ and $x-\frac12y=0$ are solved simultaneously? Why?a s v d

## Question 6

Solve these simultaneous equations graphically

a) $x+y=0$ and $y=x+2$a s v d
b) $x+3y=6$ and $2x-y+2=0$a s v d
c) $4x-y-7=0$ and $3x+4y-10=0$a s v d
d) $2x+5y-9=0$ and $5x+9y-12=0$a s v d

## Question 7

Solve these simultaneous equations graphically. Round your answers to $1$ decimal place.

a) $y=-5x-2$ and $y=\frac13x+4$a s v d
b) $2x-5y-1=0$ and $3x+y=-4$a s v d