Simultaneous Linear Equations

Which of the following equations are linear equations in one variable?

Tick for the linear equations in two variables.

The number of solutions to the system x+y=1 and 3x+5y=7

• 0

• 2

• 1

• infinite

Given simultaneous linear equations 4x + 3y = -5 and

3x - 2y = 43. Find the value of x + y.

Given that 3x + 5y = -8 and 4x + 13y = 2.

Find the value of x + 1.

Given the simultaneous linear equations x - y = 5

and x + y = 19. Find the value of y - x.

• 5

• 10

• -5

• -10

The cost of downloading one song from a website is $0.99.
Which equation can be used to find t, the cost in dollars of downloading n songs?

• t = 0.99n
• t = n + 0.99
• n = 0.99t

The sum of two numbers x and y is 77 and the larger number is less than 5 times the smaller number by 1. If x > y, which of the following pairs of simultaneous equations shows the relation between x and y?

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