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Draw these two lines on a cartesian plane and find their point of intersection: 4x + 2y = 300, 4x + 10y = 340

Mathematics

ScanSolve AI Answer

Answer

(72.5, 5)

Step-by-step solution

3 steps

The problem asks to draw two lines on a Cartesian plane and find their point of intersection. The equations are:

  1. 4x+2y=3004x + 2y = 300
  2. 4x+10y=3404x + 10y = 340

First, we will find the point of intersection algebraically.

  1. Solve the system of equations.

    Subtract equation (1) from equation (2) to eliminate xx:

    (4x+10y)−(4x+2y)=340−300(4x + 10y) - (4x + 2y) = 340 - 300 8y=408y = 40 y=408y = \frac{40}{8} y=5y = 5
  2. Substitute the value of yy into one of the original equations to find xx.

    Using equation (1):

    4x+2(5)=3004x + 2(5) = 300 4x+10=3004x + 10 = 300 4x=300−104x = 300 - 10 4x=2904x = 290 x=2904x = \frac{290}{4} x=72.5x = 72.5

    The point of intersection is (72.5,5)(72.5, 5).

  3. Find two points for each line to draw them on a Cartesian plane.

    For line 1: 4x+2y=3004x + 2y = 300
    If x=0x = 0: 2y=300  ⟹  y=1502y = 300 \implies y = 150. Point: (0,150)(0, 150).
    If y=0y = 0: 4x=300  ⟹  x=754x = 300 \implies x = 75. Point: (75,0)(75, 0).

    For line 2: 4x+10y=3404x + 10y = 340
    If x=0x = 0: 10y=340  ⟹  y=3410y = 340 \implies y = 34. Point: (0,34)(0, 34).
    If y=0y = 0: 4x=340  ⟹  x=854x = 340 \implies x = 85. Point: (85,0)(85, 0).

    The point of intersection is (72.5,5)\boxed{(72.5, 5)}.
    To draw these lines, plot the calculated points for each line and connect them. The intersection of these two lines will be at (72.5,5)(72.5, 5).

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