Solve graphically 4x-3y+4=0, 4x+3y-20=0
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Refer the attachment:)
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Tʜᴇ ɢɪᴠᴇɴ sᴇᴛ ᴏғ ʟɪɴᴇᴀʀ ᴇϙᴜᴀᴛɪᴏɴs ᴀʀᴇ ₄x﹣₃ʏ﹢₄ =₀ ..﹙₁﹚ ᴀɴᴅ ₄x﹢₃ʏ﹣₂₀=₀..﹙₂﹚
ғɪʀsᴛ ᴡᴇ ᴡɪʟʟ ᴘʟᴏᴛ ᴛʜᴇsᴇ sᴛʀᴀɪɢʜᴛ ʟɪɴᴇs.
ᴘᴏɪɴᴛs ﹙﹣₁﹐₀﹚ ᴀɴᴅ ﹙₀﹐₃/₄﹚ sᴀᴛɪsғʏ ᴛʜᴇ ᴇϙᴜᴀᴛɪᴏɴ﹙₁﹚ ᴘʟᴏᴛ ᴛʜᴇ ᴘᴏɪɴᴛs ᴀɴᴅ ᴊᴏɪɴ ᴛʜᴇᴍ
ᴘᴏɪɴᴛs ﹙₅﹐₀﹚ ᴀɴᴅ ﹙₅/₄ ﹐₅﹚ sᴀᴛɪsғʏ ᴇϙᴜᴀᴛɪᴏɴ﹙₂﹚ ᴘʟᴏᴛ ᴛʜᴇ ᴘᴏɪɴᴛs ᴀɴᴅ ᴊᴏɪɴ ᴛʜᴇᴍ.
ɴᴏᴡ ғʀᴏᴍ ᴛʜᴇ ɢʀᴀᴘʜ ɪᴛ ɪs ᴄʟᴇᴀʀ ᴛʜᴀᴛ ᴛʜᴇ ɢɪᴠᴇɴ ʟɪɴᴇs ɪɴᴛᴇʀsᴇᴄᴛ ᴀᴛ ᴘᴏɪɴᴛ ﹙₂﹐₄﹚
ᴛʜᴜs x =₂ ᴀɴᴅ ʏ =₄ ɪs ᴛʜᴇ sᴏʟᴜᴛɪᴏɴ ᴏғ ᴛʜᴇ ɢɪᴠᴇɴ ᴇϙᴜᴀᴛɪᴏɴ.
ᴛʜᴇ sʜᴀᴅᴇᴅ ʀᴇɢɪᴏɴ ɪs ᴛʜᴇ ʀᴇϙᴜɪʀᴇᴅ ʀᴇɢɪᴏɴ.
ᴀʀᴇᴀ ᴏғ ᴛʜᴇ ᴛʀɪᴀɴɢʟᴇ ABC = ₁/₂ ﹡ʙᴀsᴇ﹡ʜᴇɪɢʜᴛ ᴏғ ᴛʜᴇ ᴛʀɪᴀɴɢʟᴇ ABC
= ₁/₂ ﹡BC﹡₄
=₂BC
=₂﹡₆=₁₂ sϙ ᴜɴɪᴛs
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